Impact of Weather Parameters on Disease Intensity of White Rust of Brassica Juncea

India is one of the major producers of oilseed crops in the global oilseed market. Rapeseed-mustard is one of the seven edible oilseed crops grown in India, and it holds a unique place in the country’s agricultural economy and social structure. Of all the biotic and abiotic stresses that threaten mustard crop, white rust caused by an obligate biotrophic fungus Albugo candida is one of the most devastating. The experiments were conducted at Guru Kashi University, Talwandi sabo (Punjab) under the field and laboratory conditions to study the management of white rust during Rabi season 2018-2019. In the present study, Correlation analysis of disease intensity with weather factors indicated that maximum temperature (17.9-22.1°C) and minimum temperature (2.2-9.4°C), maximum relative humidity (85.4–92.6%), and total rainfall (mm) has significant positive correlation with disease intensity, while minimum relative humidity (45.0-63.7%) has a significant negative correlation. Temperature (min.) and Rainfall were found to have maximum positive correlation and significantly with disease intensity than other weather parameters. Hence, it means temperature (Min.) and rainfall increases the disease intensity of white rust of mustard.